<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  <title>从 FTP 服务器上下载一个文件</title>

 </head>
 <body><div class="manualnavbar" style="text-align: center;">
 <div class="prev" style="text-align: left; float: left;"><a href="function.ftp-get-option.html">ftp_get_option</a></div>
 <div class="next" style="text-align: right; float: right;"><a href="function.ftp-login.html">ftp_login</a></div>
 <div class="up"><a href="ref.ftp.html">FTP 函数</a></div>
 <div class="home"><a href="index.html">PHP Manual</a></div>
</div><hr /><div id="function.ftp-get" class="refentry">
   <div class="refnamediv">
    <h1 class="refname">ftp_get</h1>
    <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">ftp_get</span> &mdash; <span class="dc-title">从 FTP 服务器上下载一个文件</span></p>

   </div>
 <div class="refsect1 description" id="refsect1-function.ftp-get-description">
  <h3 class="title">说明</h3>
    <div class="methodsynopsis dc-description">
     <span class="type">bool</span> <span class="methodname"><strong>ftp_get</strong></span>
      ( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$ftp_stream</code></span>
     , <span class="methodparam"><span class="type">string</span> <code class="parameter">$local_file</code></span>
     , <span class="methodparam"><span class="type">string</span> <code class="parameter">$remote_file</code></span>
     , <span class="methodparam"><span class="type">int</span> <code class="parameter">$mode</code></span>
   [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$resumepos</code><span class="initializer"> = 0</span></span>
    ] )</div>

    <p class="para rdfs-comment">
     <span class="function"><strong>ftp_get()</strong></span> 函数用来下载 FTP 服务器上指定的文件并保存为本地文件。
    </p>
   </div>

 
 <div class="refsect1 parameters" id="refsect1-function.ftp-get-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">ftp_stream</code></em></dt>

     <dd>

      <p class="para">
       FTP 连接的链接标识符。
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">local_file</code></em></dt>

     <dd>

      <p class="para">
       文件本地的路径（如果文件已经存在，则会被覆盖）。
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">remote_file</code></em></dt>

     <dd>

      <p class="para">
       文件的远程路径。
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">mode</code></em></dt>

     <dd>

      <p class="para">
       传送模式。只能为 (文本模式) <strong><code>FTP_ASCII</code></strong> 或
     (二进制模式) <strong><code>FTP_BINARY</code></strong> 中的其中一个。
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">resumepos</code></em></dt>

     <dd>

      <p class="para">
       从远程文件的这个位置继续下载。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>

 
 <div class="refsect1 returnvalues" id="refsect1-function.ftp-get-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   成功时返回 <strong><code>TRUE</code></strong>， 或者在失败时返回 <strong><code>FALSE</code></strong>。
  </p>
 </div>

 <div class="refsect1 examples" id="refsect1-function.ftp-get-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-4194">
    <p><strong>Example #1 <span class="function"><strong>ftp_get()</strong></span> 例子</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /><br /></span><span style="color: #FF8000">//&nbsp;define&nbsp;some&nbsp;variables<br /></span><span style="color: #0000BB">$local_file&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'local.zip'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$server_file&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'server.zip'</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">//&nbsp;set&nbsp;up&nbsp;basic&nbsp;connection<br /></span><span style="color: #0000BB">$conn_id&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">ftp_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$ftp_server</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//&nbsp;login&nbsp;with&nbsp;username&nbsp;and&nbsp;password<br /></span><span style="color: #0000BB">$login_result&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">ftp_login</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn_id</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$ftp_user_name</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$ftp_user_pass</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//&nbsp;try&nbsp;to&nbsp;download&nbsp;$server_file&nbsp;and&nbsp;save&nbsp;to&nbsp;$local_file<br /></span><span style="color: #007700">if&nbsp;(</span><span style="color: #0000BB">ftp_get</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn_id</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$local_file</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$server_file</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">FTP_BINARY</span><span style="color: #007700">))&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"Successfully&nbsp;written&nbsp;to&nbsp;</span><span style="color: #0000BB">$local_file</span><span style="color: #DD0000">\n"</span><span style="color: #007700">;<br />}&nbsp;else&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"There&nbsp;was&nbsp;a&nbsp;problem\n"</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #FF8000">//&nbsp;close&nbsp;the&nbsp;connection<br /></span><span style="color: #0000BB">ftp_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn_id</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </p>
 </div>

 <div class="refsect1 changelog" id="refsect1-function.ftp-get-changelog">
  <h3 class="title">更新日志</h3>
  <p class="para">
   <table class="doctable informaltable">
    
     <thead>
      <tr>
       <th>版本</th>
       <th>说明</th>
      </tr>

     </thead>

     <tbody class="tbody">
      <tr>
       <td>4.3.0</td>
       <td>
        增加了 <em><code class="parameter">resumepos</code></em>。
       </td>
      </tr>

     </tbody>
    
   </table>

  </p>
 </div>

 <div class="refsect1 seealso" id="refsect1-function.ftp-get-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.ftp-pasv.html" class="function" rel="rdfs-seeAlso">ftp_pasv()</a> - 返回当前 FTP 被动模式是否打开</span></li>
    <li class="member"><span class="function"><a href="function.ftp-fget.html" class="function" rel="rdfs-seeAlso">ftp_fget()</a> - 从 FTP 服务器上下载一个文件并保存到本地一个已经打开的文件中</span></li>
    <li class="member"><span class="function"><a href="function.ftp-nb-get.html" class="function" rel="rdfs-seeAlso">ftp_nb_get()</a> - 从 FTP 服务器上获取文件并写入本地文件（non-blocking）</span></li>
    <li class="member"><span class="function"><a href="function.ftp-nb-fget.html" class="function" rel="rdfs-seeAlso">ftp_nb_fget()</a> - Retrieves a file from the FTP server and writes it to an open file (non-blocking)</span></li>
   </ul>
  </p>
 </div>

  </div><hr /><div class="manualnavbar" style="text-align: center;">
 <div class="prev" style="text-align: left; float: left;"><a href="function.ftp-get-option.html">ftp_get_option</a></div>
 <div class="next" style="text-align: right; float: right;"><a href="function.ftp-login.html">ftp_login</a></div>
 <div class="up"><a href="ref.ftp.html">FTP 函数</a></div>
 <div class="home"><a href="index.html">PHP Manual</a></div>
</div></body></html>
